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Fri, 30 Aug 2024 03:59:03 -0700 From: Dragos Tatulea To: "Michael S . Tsirkin" , Jason Wang , Eugenio Perez Martin , Si-Wei Liu , , Gal Pressman CC: Dragos Tatulea , , , Parav Pandit , Xuan Zhuo , Cosmin Ratiu Subject: [PATCH vhost v2 2/7] vdpa/mlx5: Delete direct MKEYs in parallel Date: Fri, 30 Aug 2024 13:58:33 +0300 Message-ID: <20240830105838.2666587-4-dtatulea@nvidia.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240830105838.2666587-2-dtatulea@nvidia.com> References: <20240830105838.2666587-2-dtatulea@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF0000009A:EE_|SJ1PR12MB6123:EE_ X-MS-Office365-Filtering-Correlation-Id: dc065363-0d0d-4ebd-77e2-08dcc8e2cadb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?B?emZ5MUZqQXNrZjU0bWFmeFlkUUd3SHpWV0lZZHNac2FVOG8rUGNzUmp5S3JZ?= =?utf-8?B?YURYYkJ6SkFYaFhGb0dNVFpZTkY5Q0JUTVp1ckpEOSszcHIzUDdjNTRYM2Vw?= =?utf-8?B?dXJzVkRrd3JCaENEazM1RHVFTDhOK2w0UHpLRi84OWhRS0NCYUFnRW1BeWlS?= =?utf-8?B?VUJJTkNIaTIwS3cySGVZUmJvYStjS1R6Ky83Nk0zdXRqWVhydXdlSHhBTkcx?= =?utf-8?B?L1lLSU5pclRzNFRmVFNRbjltUGQyRm01djRaaWRlVXlqOUhONHJKRGVkdzA2?= =?utf-8?B?T0NvVENwMHRXVlRXLzVWcyswd2Mra2s2cWdFMkVtbldoNEh0b3MvZ1hzNUo0?= =?utf-8?B?UVBqMEtadFg2Y3ZHTjdkbFBjU2pEaVhEU1pmQm9Xenl0Tk8zeFlCdFg1bTh3?= =?utf-8?B?UlhMNVBnZnNJTUVFd3o3U0F5QzJWWnV4VnJpNEgzZEZIWmY1MmRrcDRrTjNx?= =?utf-8?B?T29IVlRsUXZnaU81THJyOXpOOHg2dGRaVFRVbi8zME5TQS9VYi9aZG1yVmRu?= =?utf-8?B?cyszSlpnOFNyRGFDaDJHSS9lbE1sS3RqRHFMaGJKY0VFSjFPdnNIMnJiLzhG?= =?utf-8?B?R05mdy8wb1dlTkFtWUxVRytIYW9WVjc3dmxGZWkrZVpZREtmcU03OTRPaVR3?= =?utf-8?B?MkNiYXNkZCtFYU1RdjRiU0hiL2xNamZYVkRWSGdRaENpZ3hJS0FyV2RqRnBp?= =?utf-8?B?eDJxVW1wVWMyd01JQzg4ZDNEU3UzU0RpSDE5cDY0OHR1ZmQ5ekRKT1Y3S2FT?= =?utf-8?B?N0RTTC9DSkRhRWR3Rktyazd1NUlWQmJIeENuSGlla0htTGFyQXI2NWZLWi9y?= =?utf-8?B?QzliUDRFd1JjZ3lnMFFoejhjL1ZHKzQ5NGRpd0E1Rlk2RlQxMVJvQk9UNDZV?= =?utf-8?B?ekduMk9PVklDVU1qQlZvRGRNOHdSenAxayttSWVKS2llZ1pYMnYzUzd5VWhL?= =?utf-8?B?YS9Bc2FhQVVDTENEWVdOODBxTElqRzA1VmRPcTJZWk9jWmsxNUNKd3VvN0E4?= =?utf-8?B?dzdPemJkeHBLcDYxNTRMcWMvQmFvSnhjUENaa2lQKyttM1lDMHgwSnNFV2Vx?= =?utf-8?B?MDhIRTJXWlhSUGg3anZkTzhJRzlMSEcwY1BTNFdQSHFsaUt1bUlVZzRBckRq?= =?utf-8?B?Y0ZCMmY0SGRPZWUraVBobjQ1UmZJK0xqcUhtV1prSlVwekFoMmNoMHRsUndH?= =?utf-8?B?SGNGNStvWDFpcVJJMW0xK0c4aHhvdmlZNHVSbGIreXgxZXV5b3NJc3piTith?= =?utf-8?B?eXE4RmROQ2ZHNFEwc0VGRnFWRE1jbllNeWdWQW5YeGZIQlBadzAyQlZ3cm5a?= =?utf-8?B?MGxiUlJSYisrb0J6R0cwRk1IeCthMGxISWt6eEZLTWZiNlRTam9RWHlMb0ps?= =?utf-8?B?OHI5amxZaGRxZVBDK3JWWlBmbTVGUVFKemxtL0JzcmF2RldiSENQUjVSZFBu?= =?utf-8?B?K0l6UnhubkdOYlkwT2VKR08rQTg0cDQyVWJndHFVQ3UrN3RzZFR6enRvZDF2?= =?utf-8?B?RzRyN0xrWmdxc2hFdHd0anNPUmhydkFzYm4zV2kxcC9kcEpEcFlzdTA2U1hC?= =?utf-8?B?eld1cmcraTdhL1hxa1RBR3ZtalJEcFVDMXpkYU5tUWVObG5VUjZvOTJTK0JO?= =?utf-8?B?dm1lOVJVZFZIUFpTZFEraktHNE93T0JsOCtJMVlWVXR1ZVp1WEhMQUlyV2gx?= =?utf-8?B?bSt4UTEzdkw3ZjdHaDh5SURsZEhialczeXorM29nU0N6RHpRSWFSTFNGUGUz?= =?utf-8?B?eFJJSGVUeTlkQ2t4aGh4K1hxVlBaeHpGZVFaZnJRTlovTGpnMGl5NlZUOGVm?= =?utf-8?B?OEdqM3QzK0pBYzdlOWNQS1JSQ2wvM2s0N1dSVjR4aW9ZZGVycjJKT1ozV3FP?= =?utf-8?B?d0kyS2l0YTY3VUkvaS9lQ1RabnVRRU1pZjFhY2JMYjBqZWdna24wR2pwemVX?= =?utf-8?Q?hOPZIGRwE1w+9CD5zmNBz4rYMDAGOgva?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Aug 2024 10:59:17.0218 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dc065363-0d0d-4ebd-77e2-08dcc8e2cadb X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF0000009A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6123 Use the async interface to issue MTT MKEY deletion. This makes destroy_user_mr() on average 8x times faster. This number is also dependent on the size of the MR being deleted. Signed-off-by: Dragos Tatulea Reviewed-by: Cosmin Ratiu Acked-by: Eugenio P=C3=A9rez --- drivers/vdpa/mlx5/core/mr.c | 64 +++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c index e72fb11e353d..64bcae2bae8a 100644 --- a/drivers/vdpa/mlx5/core/mr.c +++ b/drivers/vdpa/mlx5/core/mr.c @@ -55,6 +55,11 @@ struct mlx5_create_mkey_mem { __be64 mtt[]; }; =20 +struct mlx5_destroy_mkey_mem { + u8 out[MLX5_ST_SZ_BYTES(destroy_mkey_out)]; + u8 in[MLX5_ST_SZ_BYTES(destroy_mkey_in)]; +}; + static void fill_create_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct_mr *mr, struct mlx5_create_mkey_mem *mem) @@ -91,6 +96,17 @@ static void create_direct_mr_end(struct mlx5_vdpa_dev *m= vdev, mr->mr =3D mlx5_idx_to_mkey(mkey_index); } =20 +static void fill_destroy_direct_mr(struct mlx5_vdpa_dev *mvdev, + struct mlx5_vdpa_direct_mr *mr, + struct mlx5_destroy_mkey_mem *mem) +{ + void *in =3D &mem->in; + + MLX5_SET(destroy_mkey_in, in, uid, mvdev->res.uid); + MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY); + MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mr->mr)); +} + static void destroy_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdp= a_direct_mr *mr) { if (!mr->mr) @@ -257,6 +273,53 @@ static int create_direct_keys(struct mlx5_vdpa_dev *mv= dev, struct mlx5_vdpa_mr * return err; } =20 +DEFINE_FREE(free_cmds, struct mlx5_vdpa_async_cmd *, kvfree(_T)) +DEFINE_FREE(free_cmd_mem, struct mlx5_destroy_mkey_mem *, kvfree(_T)) + +static int destroy_direct_keys(struct mlx5_vdpa_dev *mvdev, struct mlx5_vd= pa_mr *mr) +{ + struct mlx5_destroy_mkey_mem *cmd_mem __free(free_cmd_mem) =3D NULL; + struct mlx5_vdpa_async_cmd *cmds __free(free_cmds) =3D NULL; + struct mlx5_vdpa_direct_mr *dmr; + int err =3D 0; + int i =3D 0; + + cmds =3D kvcalloc(mr->num_directs, sizeof(*cmds), GFP_KERNEL); + cmd_mem =3D kvcalloc(mr->num_directs, sizeof(*cmd_mem), GFP_KERNEL); + if (!cmds || !cmd_mem) + return -ENOMEM; + + list_for_each_entry(dmr, &mr->head, list) { + cmds[i].out =3D cmd_mem[i].out; + cmds[i].outlen =3D sizeof(cmd_mem[i].out); + cmds[i].in =3D cmd_mem[i].in; + cmds[i].inlen =3D sizeof(cmd_mem[i].in); + fill_destroy_direct_mr(mvdev, dmr, &cmd_mem[i]); + i++; + } + + err =3D mlx5_vdpa_exec_async_cmds(mvdev, cmds, mr->num_directs); + if (err) { + + mlx5_vdpa_err(mvdev, "error issuing MTT mkey deletion for direct mrs: %d= \n", err); + return err; + } + + i =3D 0; + list_for_each_entry(dmr, &mr->head, list) { + struct mlx5_vdpa_async_cmd *cmd =3D &cmds[i++]; + + dmr->mr =3D 0; + if (cmd->err) { + err =3D err ? err : cmd->err; + mlx5_vdpa_err(mvdev, "error deleting MTT mkey [0x%llx, 0x%llx]: %d\n", + dmr->start, dmr->end, cmd->err); + } + } + + return err; +} + static int create_indirect_key(struct mlx5_vdpa_dev *mvdev, struct mlx5_vd= pa_mr *mr) { int inlen; @@ -565,6 +628,7 @@ static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev= , struct mlx5_vdpa_mr *mr struct mlx5_vdpa_direct_mr *n; =20 destroy_indirect_key(mvdev, mr); + destroy_direct_keys(mvdev, mr); list_for_each_entry_safe_reverse(dmr, n, &mr->head, list) { list_del_init(&dmr->list); unmap_direct_mr(mvdev, dmr); --=20 2.45.1